UrlParm = function() { // url参数
	var data, index;
	(function init() {
		data = [];
		index = {};
		var u = window.location.search.substr(1);
		if (u != '') {
			var parms = decodeURIComponent(u).split('&');
			for (var i = 0, len = parms.length; i < len; i++) {
				if (parms[i] != '') {
					var p = parms[i].split("=");
					if (p.length == 1 || (p.length == 2 && p[1] == '')) {
						data.push(['']);
						index[p[0]] = data.length - 1;
					} else if (typeof(p[0]) == 'undefined' || p[0] == '') {
						data[0] = [p[1]];
					} else if (typeof(index[p[0]]) == 'undefined') { // c=aaa
						data.push([p[1]]);
						index[p[0]] = data.length - 1;
					} else { // c=aaa
						data[index[p[0]]].push(p[1]);
					}
				}
			}
		}
	})();
	return {
		// 获得参数,类似request.getParameter()
		parm: function(o) { // o: 参数名或者参数次序
			try {
				return (typeof(o) == 'number' ? data[o][0] : data[index[o]][0]);
			} catch (e) {}
		},
		//获得参数组, 类似request.getParameterValues()
		parmValues: function(o) { //  o: 参数名或者参数次序
			try {
				return (typeof(o) == 'number' ? data[o] : data[index[o]]);
			} catch (e) {}
		},
		//是否含有parmName参数
		hasParm: function(parmName) {
			return typeof(parmName) == 'string' ? typeof(index[parmName]) != 'undefined' : false;
		},
		// 获得参数Map ,类似request.getParameterMap()
		parmMap: function() {
			var map = {};
			try {
				for (var p in index) {
					map[p] = data[index[p]];
				}
			} catch (e) {}
			return map;
		}
	}
}();
String.prototype.startWith = function(str) {
	if (str == null || str == "" || this.length == 0 || str.length > this.length)
		return false;
	if (this.substr(0, str.length) == str)
		return true;
	else
		return false;
	return true;
}

function show(id) {
	document.getElementById(id).style.display = "block";
}

function hide(id) {
	document.getElementById(id).style.display = "none";
}

function cssClass(id,str){
	document.getElementById(id).className = str;
}

function ajax(url, fn, syn) {
	if (null == fn)
		fn = function() {};
	var xmlhttp;
	xmlhttp = new XMLHttpRequest();
	xmlhttp.onreadystatechange = function() {
		if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
			fn(xmlhttp.responseText);
		}
	}
	xmlhttp.open("GET", url, syn);
	xmlhttp.send();
}
function playAudio(id,loop){
	if(loop)
		document.getElementById(id).loop="loop";
	document.getElementById(id).play();
}
function stopAudio(id){
	var audio = document.getElementById(id);
    if(!audio.paused)  
        audio.pause();// 这个就是暂停
    document.getElementById(id).loop="";
}
